The Makita P-49971 is a pack of PZ2 25 mm insert bits neatly put together in a fancy candy tub. Usable with impact drivers, these bits come in handy during certain tasks such as furniture assembly, screw-driving, joinery, carpentry, and cabinet-making. The screwdriver bits, true to Makita's tradition and high standards, are made of high-quality S2 alloyed steel. The avant-garde heat treatment process only adds to the quality.